package com.shop.cloud.util;

import java.awt.image.BufferedImage;  
import java.io.File;  
import java.io.IOException;  
import java.nio.file.FileSystems;  
import java.nio.file.Path;  
import java.util.HashMap;  
import java.util.Map;  
  
import javax.imageio.ImageIO;  
  
import com.google.zxing.BarcodeFormat;  
import com.google.zxing.Binarizer;  
import com.google.zxing.BinaryBitmap;  
import com.google.zxing.DecodeHintType;  
import com.google.zxing.EncodeHintType;  
import com.google.zxing.LuminanceSource;  
import com.google.zxing.MultiFormatReader;  
import com.google.zxing.MultiFormatWriter;  
import com.google.zxing.NotFoundException;  
import com.google.zxing.Result;  
import com.google.zxing.WriterException;  
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;  
import com.google.zxing.client.j2se.MatrixToImageWriter;  
import com.google.zxing.common.BitMatrix;  
import com.google.zxing.common.HybridBinarizer;
  
public class QRCodeUtils {  
      
	/** 
     * 生成二维码 
     *  
     * @throws WriterException 
     * @throws IOException 
     */  
    public static void encode(String content, String filePath, String fileName) throws WriterException, IOException {  
        int width = 300; // 图像宽度  
        int height = 300; // 图像高度  
        String format = "png";// 图像类型
        Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
        hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");  
        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,  
                BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵  
        Path path = FileSystems.getDefault().getPath(filePath, fileName);  
        MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像  
        System.out.println("输出成功.");
    }  
  
    /** 
     * 解析二维码 
     */  
    public static String decode(String filePath) {  
        BufferedImage image;  
        try {  
            image = ImageIO.read(new File(filePath));  
            LuminanceSource source = new BufferedImageLuminanceSource(image);  
            Binarizer binarizer = new HybridBinarizer(source);  
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);  
            Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();  
            hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");  
            Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码  
            System.out.println("图片中内容：  ");  
            System.out.println("author： " + result.getText());  
            System.out.println("图片中格式：  ");  
            System.out.println("encode： " + result.getBarcodeFormat());  
            return result.getText();
        } catch (IOException e) {  
            e.printStackTrace();  
        } catch (NotFoundException e) {  
            e.printStackTrace();  
        }  
        return "";
    }  
  
} 
